cis-1,2-Dichloroethylene
Nash Forreston Water Supply Corporation
NOTE: Nash Forreston Water Supply Corporation purchases water from City of Waxahachie which is required to test for cis-1,2-dichloroethylene. Sample information shown below was taken by City of Waxahachie.
1,2-Dichloroethylene, a neurotoxic solvent, exists in two different forms: trans-1,2-dichloroethylene and cis-1,2-dichloroethylene. A mixture of the two forms is used to manufacture other solvents and chemical products.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | ND | 2 | 0 | ND |
| 2019 | ND | 2 | 0 | ND |
| 2020 | ND | 2 | 0 | ND |
| 2021 | ND | 2 | 0 | ND |
| 2022 | ND | 2 | 0 | ND |
| 2023 | ND | 2 | 0 | ND |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EPA Maximum Contaminant
Level (MCL): 70 ppb
The legal limit for cis-1,2-dichloroethylene, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1980s.
ppb = parts per billion
All test results
NOTE: Nash Forreston Water Supply Corporation purchases water from City of Waxahachie which is required to test for cis-1,2-dichloroethylene. Sample information shown below was taken by City of Waxahachie.
| Date | Lab ID | Result |
|---|---|---|
| 2018-01-25 | Q1802982010 | ND |
| 2018-08-13 | Q1832216003 | ND |
| 2019-04-29 | Q1916965011 | ND |
| 2019-07-25 | Q1947719001 | ND |
| 2020-08-17 | Q2032738017 | ND |
| 2020-08-17 | Q2032738019 | ND |
| 2021-09-16 | Q2125453010 | ND |
| 2021-09-16 | Q2125453012 | ND |
| 2022-01-12 | Q2201052009 | ND |
| 2022-08-16 | Q2224047002 | ND |
| 2023-09-05 | Q2338122002 | ND |
| 2023-11-20 | Q2349758003 | ND |